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Powder-liquid dental curable material kit

a technology of liquid and curable materials, applied in dental prosthetics, dental impression caps, dentistry, etc., can solve the problems of ineffective technology for suppressing heat generation during curing, excessive prolongation of curing time, and slow curing ra

Active Publication Date: 2015-02-05
TOKUYAMA DENTAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a powder-liquid dental curable material kit that is used as a shared kit for both brush-on and kneading techniques. The kit prevents excessive prolongation of curing time when using the brush-on technique while ensuring high operability for both techniques. This is achieved by presuming that the use of a combination of an organic halogen compound, a pyrimidinetrione compound, and an organic metal compound as the radial polymerization initiator and by adding a peroxide as a further additive. The peroxide acts as an oxygen supply source, eliminating a shortage of oxygen during curing and suppressing the excessive prolongation of curing time. The powder-liquid dental curable material kit of the present invention has improved operability and may be used for dental procedures where both techniques are required.

Problems solved by technology

However, when the curing time is controlled by this method, a polymerization reaction proceeds at once after the polymerization inhibitor is used up to delay curing and disappears.
Therefore, the technology is ineffective for the suppression of heat generation during curing.

Method used

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  • Powder-liquid dental curable material kit

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0145]The following components were stirred and mixed together for 3 hours according to the following formulation to obtain the liquid material (A).

Polymerizable monomer (a1);Methyl methacrylate 90 gTrimethylolpropane trimethacrylate 10 gOrganic halogen compound (a2);Dilauryl dimethyl ammonium chloride0.2 gRadical chain transfer agent (a3);2,4-diphenyl-4-methyl-1-pentene0.2 gPolymerization inhibitor (other);Butyl hydroxytoluene0.1 g

[0146]Meanwhile, the following components were mixed together by using a rocking mixture for 3 hours according to the following formulation to obtain the powder material (B).

Non-crosslinked resin particles (b1);Ethyl polymethacrylate10g(average particle diameter of 35 μm)Methyl methacrylate-ethyl methacrylate90gcopolymer(average particle diameter of 60 μm)Pyrimidinetrione compound (b2);1-cyclohexyl-5-ethyl pyrimidinetrione1.5gOrganic metal compound (b3);Acetylacetone copper0.002gPeroxide (Z);Benzoyl peroxide0.15g

[0147]The curing time, curing heat generati...

examples 2 to 39

[0149]Powder-liquid curable material kits were prepared in the same manner as in Example 1 except that the formulations (compositions) of the liquid material (A) and the powder material (B) were changed as shown in Table 1 or Table 2 to evaluate the curing time, curing heat generation, flexural strength and the color of the cured product. The test results are shown in Table 3.

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Abstract

A powder-liquid dental curable material kit composed of (A) a liquid material and (B) a powder material, wherein the liquid material (A) contains (a1) a radically polymerizable (meth)acrylic monomer, (a2) an organic halogen compound and (a3) a radical chain transfer agent; the powder material (B) contains (b1) non-crosslinked resin particles, (b2) a pyrimidinetrione compound and (b3) an organic metal compound; and (Z) a peroxide is blended in at least one of the liquid material (A) and the powder material (B). This curable material kit is capable of reducing the heat generation during the curing of a curable material which is a mixture of the liquid material (A) and the powder material (B) and is not susceptible to the excessive prolongation of the curing time even when the curable material is cured by a brush-on technique, thereby ensuring an appropriate curing time for both of a brush-on technique and a kneading technique.

Description

TECHNICAL FIELD[0001]The present invention relates to a powder-liquid dental curable material kit composed of a liquid material and a powder material both of which are mixed together to be used for dental applications.BACKGROUND ART[0002]A powder-liquid curable material kit used in the field of dental treatment is composed of a liquid material containing a radically polymerizable (meth)acrylic monomer such as a lower alkyl(meth)acrylate-based monomer as the main component and a powder material containing a non-crosslinked resin such as polymethyl methacrylate as the main component, and a curable material is prepared by mixing together the powder material and the liquid material.[0003]In this curable material kit, a chemical polymerization type radical polymerization initiator composed of a plurality of constituent components is used to polymerize the above radically polymerizable (meth)acrylic monomer. That is, the constituent components of this chemical polymerization type polymeri...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K6/083
CPCA61K6/083A61K6/60A61K6/887C08L33/10
Inventor SATO, MEGUMINAKASHIMA, KEIMATSUSHIGE, KOJI
Owner TOKUYAMA DENTAL CORP
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